CN104401440A

CN104401440A - Hydraulic brake for bicycle

Info

Publication number: CN104401440A
Application number: CN201410436159.8A
Authority: CN
Inventors: 温芫鋐
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-08-29
Filing date: 2014-08-29
Publication date: 2015-03-11

Abstract

The invention provides a hydraulic brake for a bicycle. The hydraulic brake comprises a body, a piston and a braking assembly, wherein the body is provided with a piston cylinder connected with a pressure source; a piston is arranged in the piston cylinder in a sliding manner; the braking assembly is pivoted on the body through a first pivot part and comprises an operating part and a push pressing part which are positioned on two opposite sides of the first pivot part as well as a rolling piece arranged on the push pressing part in a rolling manner; the operating part can be operated by the outside, and the rolling piece can be pressed against the piston in a rolling manner. The structure of the hydraulic brake is obviously simplified, and the hydraulic brake is more convenient and quicker to assemble; a combination structure does not need to be designed on the contact surfaces of the piston and the rolling piece, so that manufacturing production and assembling can be facilitated; the section of the rolling piece has a continuous and closed contour along the sliding direction of the piston; in the direction, any surface of the rolling piece can successfully push and press the piston, and the phenomenon that abrasion, which is caused by a fact that only one surface pushes the piston, is concentrated on the same part is avoided, so that the hydraulic brake for the bicycle is longer in service life.

Description

Bicycle use hydraulic brake

Technical field

The present invention is relevant with bicycle brake, relates to a kind of bicycle use hydraulic brake especially.

Background technology

Known Regular Bicycle hydraulic brake can be fed through the pivot of brake hand handle with a push rod one end, push rod one end to be fixed on pivot with brake hand being connected with this, the push rod other end then engages with piston in a hydraulic actuating cylinder, so when brake crank start, namely can piston be made linkedly inwardly to slide in hydraulic actuating cylinder, extrude internal liquid simultaneously and start the object that clamp reach brake.Namely bicycle use hydraulic brake as disclosed in TaiWan, China patent I409182, I440577 etc. belongs to this type of.

But in this type of known assembly technique, the pivot shape of brake hand handle is tiny bores a hole above again, will increase and manufacture upper difficulty, and pivot is easily damaged under the effect of push rod pressure.And push rod only can rely on same one end to promote piston, easily cause the abrasion of push rod, and push rod then needs to close with piston close proximity, otherwise push rod will drop and cannot promote piston, that is, piston and push rod faying face need accurate processing and closely configure, or need design one structure directly piston and push rod to be locked knot mutually, but no matter which kind of mode, all very complicated and be difficult to assembling in manufacture, there is the scarce fraud urgently improved.

Therefore, be necessary to provide a kind of novelty and there is the bicycle use hydraulic brake of progressive, to solve the problem.

Summary of the invention

Main purpose of the present invention is to provide a kind of bicycle use hydraulic brake, not only can conveniently manufacture, and very easy at fit on, and the part that pushing and pressing piston can be made to slide can have service life more of a specified duration.

For reaching above-mentioned purpose, the present invention by the following technical solutions:

A kind of bicycle use hydraulic brake, comprises a body, a piston and a brake assemblies.This body has a piston cylinder be connected with a pressure source, and this piston is slidedly arranged in this piston cylinder, and this brake assemblies is hubbed at this body with one first pivot portion, this brake assemblies comprises the rolling member that this pushing and pressing part is rollably located in the operating portion that is positioned at these relative both sides, the first pivot portion and a pushing and pressing part and.Wherein, this operating portion can supply to be operated by the external world, and this rolling member is rollably connected to this piston.

Further,

Described rolling member has the profile of a continuous arc Shape closed along the section of described piston direction of slip.

Described rolling member is a roller.

Described roller is hubbed at described pushing and pressing part.

Described brake assemblies also comprises a coupling assembling, and this coupling assembling is hubbed at described body with described first pivot portion, and described operating portion is relative with described pushing and pressing part is located at this coupling assembling both sides.

Described operating portion is hubbed at described coupling assembling with one second pivot portion, wherein has at least an elastic component to be located between described operating portion and described coupling assembling, and each elastic component two ends abut mutually with described operating portion and described coupling assembling respectively.

This bicycle use hydraulic brake also has one for the interposed unit being located in a handlebar.

The invention has the advantages that:

The present invention does not need additionally to install other rod members additional to promote piston, not only constructively has significantly to simplify and can comparatively fast and easy at fit on; Need not bamboo product integrated structure on piston and rolling member contact surface, conveniently can manufacture and produce and assembling; Rolling member is have a continuous and closed profile along the section of piston direction of slip, this side up, any one side of rolling member all successfully can push against piston, and situation that piston causes abrasion all to concentrate on a part occurs can not only to have one side to promote, therefore service life more of a specified duration can be had.

Accompanying drawing explanation

Fig. 1 is the block diagram of a preferred embodiment of the present invention.

Fig. 2 is the exploded drawings of a preferred embodiment of the present invention.

Fig. 3 is the section-drawing of a preferred embodiment of the present invention.

Fig. 4 is the start constructed profile of a preferred embodiment of the present invention.

Detailed description of the invention

Below only with embodiment, the embodiment that the present invention is possible is described, so and be not used to limit the present invention institute for the category protected, states in advance.

Please refer to Fig. 1 to Fig. 4, it shows a preferred embodiment of the present invention, and bicycle use hydraulic brake 1 of the present invention comprises body 2, piston 3 and a brake assemblies 4.

Body 2 has a piston cylinder 22 be connected with a pressure source 21, and piston 3 is located in piston cylinder 22 slidably.Brake assemblies 4 is then hubbed at body 2 with one first pivot portion 41, wherein brake assemblies 4 comprises the first pivot portion 41 that is positioned at relatively the rolling member 431 of pushing and pressing part 43 is rollably located in an operating portion 42 of both sides and a pushing and pressing part 43 and, operating portion 42 can for being operated by the external world, and rolling member 431 is rollably connected to piston 3.Preferably, bicycle use hydraulic brake 1 also has one for the interposed unit 5 being located in a handlebar.

When operating portion 42 is subject to external forces, brake assemblies 4 start centered by the first pivot portion 41 will be driven, and push against piston 3 toward piston cylinder 22 internal slide by rolling member 431, while piston 3 inwardly slides, internal liquid will be extruded start clamp, reach the object of brake.Owing to directly utilizing rolling member 431 to promote piston 3, therefore do not need additionally to install additional again a push rod can driven plunger 3, even and if piston 3 with the structure that do not combine on the contact surface of rolling member 431, rolling member 431 also positively can promote piston 3 and slide, therefore do not need design on piston 3 with rolling member 431 contact surface or process integrated structure, save the much processing and manufacturing time and simplify the degree of difficulty assembled, effectively promoting shipment speed.

Wherein, the outer peripheral edge portion of rolling member 431 has an arc and can push against piston 3 sleekly for good, so also can be in side elevational cross-section and becomes gear-like to have the structure of the cylinder of concaveconvex structure, but not as limit.Preferably, rolling member 431 is the profile with a continuous arc Shape closed along the section of piston 3 direction of slip, can be roller 432, ball etc. other there is the part of this character, because the outer peripheral edges of rolling member 431 are profiles of continuous arc, this side up, no matter rolling member 431 rotate that how many angles all can be used for pushing against piston 3, effectively can share abrasion and avoid because causing the abrasion of rolling member 431 all to concentrate on same position under long-time use.In the present embodiment, rolling member 431 is a roller 432, roller 432 can have average contact with piston 3, and be the profile of a circle along the section of piston 3 direction of slip, at this section upper roller 432 and piston 3 point cantact, therefore when roller 432 pushing and pressing piston 3 and roll while, suffered friction force is less can directly provide the positive force that piston 3 is larger, and then obtains preferably braking effect.And due to section be circular contour, when brake assemblies 4 is centered by the first pivot portion 41 during pivotable, no matter roller 432 all can push against piston 3 swimmingly in which angle, and preferably, roller 432 is hubbed at pushing and pressing part 43, can person's disassembling, assembling and replacing easy to use.

Brake assemblies 4 also comprises a coupling assembling 44, and coupling assembling 44 is hubbed at body 2 with the first pivot portion 41, and wherein operating portion 42 is relative with pushing and pressing part 43 is located at coupling assembling 44 both sides.And operating portion 42 is hubbed at coupling assembling 44 with one second pivot portion 45, an elastic component 46 is wherein had at least to be located between operating portion and coupling assembling, and each elastic component 46 two ends abut mutually with operating portion 42 and coupling assembling 44 respectively, elastic component 46 can be but is not limited to torsion spring, compression or extension spring.When operating portion 42 is subject to external operation centered by the second pivot portion 45 after pivotable one low-angle, each elastic component 46 can be squeezed, and produces application force band rotation connection pivotable centered by the first pivot portion 41, and promotes piston 3 by the roller 432 being located at pushing and pressing part 43.And when extraneous no operation does not use time, elastic component 46 can provide a restoring force to be rebounded by operating portion 42 original position.Certain brake assemblies 4 in order to can ease of assembly also can be one-body molded, if but operating portion 42 is with when being hubbed at the mode of coupling assembling 44, when being subject to unexpected shock, operating portion 42 is compared with the activity space that can have buffering, or bend the situation generation of even rupturing when operating portion 42 is subject to external force, only need replacement operation portion 42 and do not need to change whole brake assemblies 4.

To sum up, bicycle use hydraulic brake of the present invention directly promotes piston by rolling member, does not need additionally to install other rod members additional to promote piston, not only constructively has significantly to simplify and can comparatively fast and easy at fit on.

Further, piston with rolling member contact surface on need not bamboo product one integrated structure, more can aspect manufacture produce and assembling.In addition, rolling member is have a continuous and closed profile along the section of piston direction of slip, this side up, any one side of rolling member all successfully can push against piston, and situation that piston causes abrasion all to concentrate on a part occurs can not only to have one side to promote, therefore service life more of a specified duration can be had.

In sum, in unit design of the present invention, practicality and benefit, really be to meet in industry needed for development completely, and disclosed architecture invention is also have unprecedented innovative structure, so its there is " novelty " should without doubt, the present invention can have more the enhancement of effect compared with known structure again, therefore also has " progressive ".

Claims

1. bicycle use hydraulic brake, is characterized in that, comprising:

One body, it has a piston cylinder be connected with a pressure source;

One piston, it is slidedly arranged in this piston cylinder;

One brake assemblies, this body is hubbed at one first pivot portion, comprise the rolling member that this pushing and pressing part is rollably located in the operating portion that is positioned at these relative both sides, the first pivot portion and a pushing and pressing part and, this operating portion can for being operated by the external world, and this rolling member is rollably connected to this piston.

2. bicycle use hydraulic brake as claimed in claim 1, is characterized in that, described rolling member has the profile of a continuous arc Shape closed along the section of described piston direction of slip.

3. bicycle use hydraulic brake as claimed in claim 1, it is characterized in that, described rolling member is a roller.

4. bicycle use hydraulic brake as claimed in claim 3, it is characterized in that, described roller is hubbed at described pushing and pressing part.

5. bicycle use hydraulic brake as claimed in claim 1, it is characterized in that, described brake assemblies also comprises a coupling assembling, and this coupling assembling is hubbed at described body with described first pivot portion, and described operating portion is relative with described pushing and pressing part is located at this coupling assembling both sides.

6. bicycle use hydraulic brake as claimed in claim 5, it is characterized in that, described operating portion is hubbed at described coupling assembling with one second pivot portion, wherein have at least an elastic component to be located between described operating portion and described coupling assembling, and each elastic component two ends abut respectively mutually with described operating portion and described coupling assembling.

7. bicycle use hydraulic brake as claimed in claim 1, is characterized in that, also has one for the interposed unit being located in a handlebar.